1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
amm1812
3 years ago
15

The measures of the angles of a triangle solve for X

Mathematics
1 answer:
kompoz [17]3 years ago
7 0

Answer:

x = 7

Step-by-step explanation:

Because this is a right triangle, one angle is a right angle (90°). All triangles have all three angle measures adding up to 180°, so the other two angles' measures add up to 90° (90 + 90 = 180).

Combine like terms of the angle measures.

6x + 9x = 15x

-3 + (-12) = -15

15x - 15

Because the sum of the measures of the two angles have to equal 90,

15x - 15 = 90

Add 15 from both sides.

15x = 105

Divide both sides by 15.

x = 7

To check, substitute 7 in both expressions.

6(7) - 3 = 39

9(7) - 12 = 51

39 + 51 + 90 (the measure of the right angle) = 180, so the value of x is 7.

I hope this helped :)

You might be interested in
If ADEF is reflected over the x-axis, what would be the coordinates of point F?
Brut [27]

Answer:

Please check the explanation.

Step-by-step explanation:

Let the coordinates of the point F be (x, y).

When a point F(x, y) is reflected over the x-axis, the x-coordinate of the point F remains the same, and the y-coordinate of the point reverses the sign.

Thus, the rule of reflection over the x-axis:

F(x, y)   →    F'(x, -y)

Here,

F'(x, -y) would be coordinates of point F after the reflection over the x-axis.

Let say, the point F(1, 2).

The coordinate of the point F after the reflection over the x-axis would be:

F(1, 2)   →    F'(1, -2)

Thus, F'(1, -2) would be the coordinates of point F after the reflection over the x-axis.

6 0
3 years ago
Give an equality that represents the phrase the sum 1 and y is greater than or equal to 9.
raketka [301]
That would be 1+y≥9

the one and the y go on one side and the nine on the other
4 0
3 years ago
Please help me thanks.
daser333 [38]

y=(-2x)+5

Step-by-step explanation:

4 0
3 years ago
I have 4 congruent sides, and opposite sides are parallel what am I?
Elodia [21]
The answer is a square
3 0
3 years ago
Read 2 more answers
Let f(x)=4x-1 and g(x)=x2+1 <br> Find (f•g)(7)
Helen [10]
4x-1 28-1=27 x2+1 =55
8 0
3 years ago
Other questions:
  • I got 5 more math problems to do and I’m done please help
    13·2 answers
  • Write 0.00968 in scientific notation
    13·1 answer
  • Quadrilateral LMNO has diagonals that intersect at point P. If LP=NP, MP = y + 25, and OP = 5y + 29, find the length of MO such
    10·1 answer
  • Find the mean and median for this set of number: 80, 70, 60, 40, 80.
    9·2 answers
  • −6x+2y=−26 ; 8x−8y=24
    5·1 answer
  • Twice h increase by 5
    6·1 answer
  • What is the equation of the line that is parallel to the given line and has an X intercept of -3
    9·1 answer
  • Please help me ASAP :)
    6·1 answer
  • There are 4 grams of fiber in 1/2 cup of oats how many grams of fiber are in 3 1/2
    12·2 answers
  • K(x)= -3x - 3; find k(-2)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!